dMatrix transpose(dMatrix m){
dMatrix t(m[0].size(), dVector(m.size()));
for (int i = 0; i < m.size(); i++){
for( int j = 0; j < m[0].size(); j++){
t[i][j] = m[j][i];
}
}
return t;
}
dMatrix multiplicacaoNN(const dMatrix m1, const dMatrix m2)
{
int m1l = m1.size(), m1c = m1[0].size(), m2l=m2.size(), m2c = m2[0].size();
dMatrix matrix(m1l, dVector(m2c, 0));
for (int l = 0; l < m1l; l++){
for (int c = 0; c < m1c; c++){
for (int k = 0; k < m1c; k++){
matrix[l][c] += m1[l][k] * m2[k][c];
}
}
}
return matrix;
}
dVector multiplicacaoN1(const dMatrix &m1, const dVector &v2)
{
dVector vetor (m1[0].size());
for (int i = 0; i < m1.size(); ++i)
for (int j = 0; j < m1[0].size(); ++j)
vetor[i] += m1[i][j] * v2[j];
return vetor;
}
dMatrix getRotationNN(dMatrix m){
dMatrix t(m.size(), dVector(m.size()));
for (int i = 0; i < m.size()-1; i++){
for (int j = 0; j < m.size()-1; j++){
t[i][j] = m[i][j];
}
}
t[m.size() - 1][m.size() - 1] = 1;
return t;
}
